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<?php
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//=======================================================================
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// File: JPGRAPH_RGB.INC.PHP
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// Description: Class to handle RGb color space specification and
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// named colors
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// Created: 2001-01-08 (Refactored to separate file 2008-08-01)
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// Ver: $Id: jpgraph_rgb.inc.php 1893 2009-10-02 23:15:25Z ljp $
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//
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// Copyright (c) Aditus Consulting. All rights reserved.
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//========================================================================
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/*===================================================
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// CLASS RGB
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// Description: Color definitions as RGB triples
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//===================================================
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*/
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class RGB {
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public $rgb_table;
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public $img;
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function __construct($aImg=null) {
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$this->img = $aImg;
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// Conversion array between color names and RGB
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$this->rgb_table = array(
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'aqua'=> array(0,255,255),
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'lime'=> array(0,255,0),
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'teal'=> array(0,128,128),
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'whitesmoke'=>array(245,245,245),
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'gainsboro'=>array(220,220,220),
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'oldlace'=>array(253,245,230),
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'linen'=>array(250,240,230),
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'antiquewhite'=>array(250,235,215),
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'papayawhip'=>array(255,239,213),
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'blanchedalmond'=>array(255,235,205),
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'bisque'=>array(255,228,196),
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'peachpuff'=>array(255,218,185),
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'navajowhite'=>array(255,222,173),
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'moccasin'=>array(255,228,181),
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'cornsilk'=>array(255,248,220),
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'ivory'=>array(255,255,240),
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'lemonchiffon'=>array(255,250,205),
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'seashell'=>array(255,245,238),
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'mintcream'=>array(245,255,250),
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'azure'=>array(240,255,255),
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'aliceblue'=>array(240,248,255),
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'lavender'=>array(230,230,250),
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'lavenderblush'=>array(255,240,245),
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'mistyrose'=>array(255,228,225),
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'white'=>array(255,255,255),
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'black'=>array(0,0,0),
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'darkslategray'=>array(47,79,79),
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'dimgray'=>array(105,105,105),
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'slategray'=>array(112,128,144),
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'lightslategray'=>array(119,136,153),
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'gray'=>array(190,190,190),
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'lightgray'=>array(211,211,211),
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'midnightblue'=>array(25,25,112),
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'navy'=>array(0,0,128),
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'indigo'=>array(75,0,130),
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'electricindigo'=>array(102,0,255),
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'deepindigo'=>array(138,43,226),
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'pigmentindigo'=>array(75,0,130),
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'indigodye'=>array(0,65,106),
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'cornflowerblue'=>array(100,149,237),
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'darkslateblue'=>array(72,61,139),
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'slateblue'=>array(106,90,205),
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'mediumslateblue'=>array(123,104,238),
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'lightslateblue'=>array(132,112,255),
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'mediumblue'=>array(0,0,205),
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'royalblue'=>array(65,105,225),
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'blue'=>array(0,0,255),
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'dodgerblue'=>array(30,144,255),
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'deepskyblue'=>array(0,191,255),
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'skyblue'=>array(135,206,235),
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'lightskyblue'=>array(135,206,250),
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'steelblue'=>array(70,130,180),
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'lightred'=>array(211,167,168),
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'lightsteelblue'=>array(176,196,222),
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'lightblue'=>array(173,216,230),
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'powderblue'=>array(176,224,230),
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'paleturquoise'=>array(175,238,238),
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'darkturquoise'=>array(0,206,209),
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'mediumturquoise'=>array(72,209,204),
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'turquoise'=>array(64,224,208),
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'cyan'=>array(0,255,255),
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'lightcyan'=>array(224,255,255),
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'cadetblue'=>array(95,158,160),
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'mediumaquamarine'=>array(102,205,170),
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'aquamarine'=>array(127,255,212),
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'darkgreen'=>array(0,100,0),
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'darkolivegreen'=>array(85,107,47),
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'darkseagreen'=>array(143,188,143),
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'seagreen'=>array(46,139,87),
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'mediumseagreen'=>array(60,179,113),
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'lightseagreen'=>array(32,178,170),
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'palegreen'=>array(152,251,152),
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'springgreen'=>array(0,255,127),
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'lawngreen'=>array(124,252,0),
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'green'=>array(0,255,0),
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'chartreuse'=>array(127,255,0),
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'mediumspringgreen'=>array(0,250,154),
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'greenyellow'=>array(173,255,47),
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'limegreen'=>array(50,205,50),
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'yellowgreen'=>array(154,205,50),
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'forestgreen'=>array(34,139,34),
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'olivedrab'=>array(107,142,35),
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'darkkhaki'=>array(189,183,107),
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'khaki'=>array(240,230,140),
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'palegoldenrod'=>array(238,232,170),
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'lightgoldenrodyellow'=>array(250,250,210),
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'lightyellow'=>array(255,255,200),
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'yellow'=>array(255,255,0),
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'gold'=>array(255,215,0),
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'lightgoldenrod'=>array(238,221,130),
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'goldenrod'=>array(218,165,32),
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'darkgoldenrod'=>array(184,134,11),
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'rosybrown'=>array(188,143,143),
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'indianred'=>array(205,92,92),
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'saddlebrown'=>array(139,69,19),
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'sienna'=>array(160,82,45),
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'peru'=>array(205,133,63),
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'burlywood'=>array(222,184,135),
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'beige'=>array(245,245,220),
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'wheat'=>array(245,222,179),
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'sandybrown'=>array(244,164,96),
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'tan'=>array(210,180,140),
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'chocolate'=>array(210,105,30),
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'firebrick'=>array(178,34,34),
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'brown'=>array(165,42,42),
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'darksalmon'=>array(233,150,122),
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'salmon'=>array(250,128,114),
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'lightsalmon'=>array(255,160,122),
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'orange'=>array(255,165,0),
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'darkorange'=>array(255,140,0),
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'coral'=>array(255,127,80),
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'lightcoral'=>array(240,128,128),
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'tomato'=>array(255,99,71),
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'orangered'=>array(255,69,0),
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'red'=>array(255,0,0),
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'hotpink'=>array(255,105,180),
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'deeppink'=>array(255,20,147),
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'pink'=>array(255,192,203),
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'lightpink'=>array(255,182,193),
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'palevioletred'=>array(219,112,147),
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'maroon'=>array(176,48,96),
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'mediumvioletred'=>array(199,21,133),
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'violetred'=>array(208,32,144),
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'magenta'=>array(255,0,255),
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'violet'=>array(238,130,238),
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'plum'=>array(221,160,221),
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'orchid'=>array(218,112,214),
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'mediumorchid'=>array(186,85,211),
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'darkorchid'=>array(153,50,204),
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'darkviolet'=>array(148,0,211),
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'blueviolet'=>array(138,43,226),
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'purple'=>array(160,32,240),
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'mediumpurple'=>array(147,112,219),
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'thistle'=>array(216,191,216),
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'snow1'=>array(255,250,250),
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'snow2'=>array(238,233,233),
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'snow3'=>array(205,201,201),
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'snow4'=>array(139,137,137),
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'seashell1'=>array(255,245,238),
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'seashell2'=>array(238,229,222),
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'seashell3'=>array(205,197,191),
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'seashell4'=>array(139,134,130),
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'AntiqueWhite1'=>array(255,239,219),
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'AntiqueWhite2'=>array(238,223,204),
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'AntiqueWhite3'=>array(205,192,176),
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'AntiqueWhite4'=>array(139,131,120),
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'bisque1'=>array(255,228,196),
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'bisque2'=>array(238,213,183),
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'bisque3'=>array(205,183,158),
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'bisque4'=>array(139,125,107),
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'peachPuff1'=>array(255,218,185),
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'peachpuff2'=>array(238,203,173),
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'peachpuff3'=>array(205,175,149),
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'peachpuff4'=>array(139,119,101),
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'navajowhite1'=>array(255,222,173),
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'navajowhite2'=>array(238,207,161),
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'navajowhite3'=>array(205,179,139),
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'navajowhite4'=>array(139,121,94),
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'lemonchiffon1'=>array(255,250,205),
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'lemonchiffon2'=>array(238,233,191),
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'lemonchiffon3'=>array(205,201,165),
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'lemonchiffon4'=>array(139,137,112),
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'ivory1'=>array(255,255,240),
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'ivory2'=>array(238,238,224),
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'ivory3'=>array(205,205,193),
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'ivory4'=>array(139,139,131),
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'honeydew'=>array(193,205,193),
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'lavenderblush1'=>array(255,240,245),
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'lavenderblush2'=>array(238,224,229),
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'lavenderblush3'=>array(205,193,197),
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'lavenderblush4'=>array(139,131,134),
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'mistyrose1'=>array(255,228,225),
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'mistyrose2'=>array(238,213,210),
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'mistyrose3'=>array(205,183,181),
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'mistyrose4'=>array(139,125,123),
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'azure1'=>array(240,255,255),
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'azure2'=>array(224,238,238),
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'azure3'=>array(193,205,205),
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'azure4'=>array(131,139,139),
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'slateblue1'=>array(131,111,255),
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'slateblue2'=>array(122,103,238),
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'slateblue3'=>array(105,89,205),
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'slateblue4'=>array(71,60,139),
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211 |
'royalblue1'=>array(72,118,255),
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'royalblue2'=>array(67,110,238),
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'royalblue3'=>array(58,95,205),
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'royalblue4'=>array(39,64,139),
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215 |
'dodgerblue1'=>array(30,144,255),
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216 |
'dodgerblue2'=>array(28,134,238),
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'dodgerblue3'=>array(24,116,205),
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218 |
'dodgerblue4'=>array(16,78,139),
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219 |
'steelblue1'=>array(99,184,255),
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220 |
'steelblue2'=>array(92,172,238),
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'steelblue3'=>array(79,148,205),
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'steelblue4'=>array(54,100,139),
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'deepskyblue1'=>array(0,191,255),
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224 |
'deepskyblue2'=>array(0,178,238),
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225 |
'deepskyblue3'=>array(0,154,205),
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'deepskyblue4'=>array(0,104,139),
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'skyblue1'=>array(135,206,255),
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'skyblue2'=>array(126,192,238),
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'skyblue3'=>array(108,166,205),
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230 |
'skyblue4'=>array(74,112,139),
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'lightskyblue1'=>array(176,226,255),
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'lightskyblue2'=>array(164,211,238),
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'lightskyblue3'=>array(141,182,205),
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'lightskyblue4'=>array(96,123,139),
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'slategray1'=>array(198,226,255),
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'slategray2'=>array(185,211,238),
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'slategray3'=>array(159,182,205),
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238 |
'slategray4'=>array(108,123,139),
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239 |
'lightsteelblue1'=>array(202,225,255),
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240 |
'lightsteelblue2'=>array(188,210,238),
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241 |
'lightsteelblue3'=>array(162,181,205),
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242 |
'lightsteelblue4'=>array(110,123,139),
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243 |
'lightblue1'=>array(191,239,255),
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244 |
'lightblue2'=>array(178,223,238),
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245 |
'lightblue3'=>array(154,192,205),
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'lightblue4'=>array(104,131,139),
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247 |
'lightcyan1'=>array(224,255,255),
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248 |
'lightcyan2'=>array(209,238,238),
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249 |
'lightcyan3'=>array(180,205,205),
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250 |
'lightcyan4'=>array(122,139,139),
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251 |
'paleturquoise1'=>array(187,255,255),
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252 |
'paleturquoise2'=>array(174,238,238),
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253 |
'paleturquoise3'=>array(150,205,205),
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254 |
'paleturquoise4'=>array(102,139,139),
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255 |
'cadetblue1'=>array(152,245,255),
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256 |
'cadetblue2'=>array(142,229,238),
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257 |
'cadetblue3'=>array(122,197,205),
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258 |
'cadetblue4'=>array(83,134,139),
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259 |
'turquoise1'=>array(0,245,255),
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260 |
'turquoise2'=>array(0,229,238),
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261 |
'turquoise3'=>array(0,197,205),
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262 |
'turquoise4'=>array(0,134,139),
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263 |
'cyan1'=>array(0,255,255),
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264 |
'cyan2'=>array(0,238,238),
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265 |
'cyan3'=>array(0,205,205),
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266 |
'cyan4'=>array(0,139,139),
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267 |
'darkslategray1'=>array(151,255,255),
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268 |
'darkslategray2'=>array(141,238,238),
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269 |
'darkslategray3'=>array(121,205,205),
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270 |
'darkslategray4'=>array(82,139,139),
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271 |
'aquamarine1'=>array(127,255,212),
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272 |
'aquamarine2'=>array(118,238,198),
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273 |
'aquamarine3'=>array(102,205,170),
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274 |
'aquamarine4'=>array(69,139,116),
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275 |
'darkseagreen1'=>array(193,255,193),
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'darkseagreen2'=>array(180,238,180),
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277 |
'darkseagreen3'=>array(155,205,155),
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278 |
'darkseagreen4'=>array(105,139,105),
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279 |
'seagreen1'=>array(84,255,159),
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280 |
'seagreen2'=>array(78,238,148),
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281 |
'seagreen3'=>array(67,205,128),
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282 |
'seagreen4'=>array(46,139,87),
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283 |
'palegreen1'=>array(154,255,154),
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'palegreen2'=>array(144,238,144),
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'palegreen3'=>array(124,205,124),
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'palegreen4'=>array(84,139,84),
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'springgreen1'=>array(0,255,127),
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'springgreen2'=>array(0,238,118),
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'springgreen3'=>array(0,205,102),
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'springgreen4'=>array(0,139,69),
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291 |
'chartreuse1'=>array(127,255,0),
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292 |
'chartreuse2'=>array(118,238,0),
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293 |
'chartreuse3'=>array(102,205,0),
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294 |
'chartreuse4'=>array(69,139,0),
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295 |
'olivedrab1'=>array(192,255,62),
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|
296 |
'olivedrab2'=>array(179,238,58),
|
|
|
297 |
'olivedrab3'=>array(154,205,50),
|
|
|
298 |
'olivedrab4'=>array(105,139,34),
|
|
|
299 |
'darkolivegreen1'=>array(202,255,112),
|
|
|
300 |
'darkolivegreen2'=>array(188,238,104),
|
|
|
301 |
'darkolivegreen3'=>array(162,205,90),
|
|
|
302 |
'darkolivegreen4'=>array(110,139,61),
|
|
|
303 |
'khaki1'=>array(255,246,143),
|
|
|
304 |
'khaki2'=>array(238,230,133),
|
|
|
305 |
'khaki3'=>array(205,198,115),
|
|
|
306 |
'khaki4'=>array(139,134,78),
|
|
|
307 |
'lightgoldenrod1'=>array(255,236,139),
|
|
|
308 |
'lightgoldenrod2'=>array(238,220,130),
|
|
|
309 |
'lightgoldenrod3'=>array(205,190,112),
|
|
|
310 |
'lightgoldenrod4'=>array(139,129,76),
|
|
|
311 |
'yellow1'=>array(255,255,0),
|
|
|
312 |
'yellow2'=>array(238,238,0),
|
|
|
313 |
'yellow3'=>array(205,205,0),
|
|
|
314 |
'yellow4'=>array(139,139,0),
|
|
|
315 |
'gold1'=>array(255,215,0),
|
|
|
316 |
'gold2'=>array(238,201,0),
|
|
|
317 |
'gold3'=>array(205,173,0),
|
|
|
318 |
'gold4'=>array(139,117,0),
|
|
|
319 |
'goldenrod1'=>array(255,193,37),
|
|
|
320 |
'goldenrod2'=>array(238,180,34),
|
|
|
321 |
'goldenrod3'=>array(205,155,29),
|
|
|
322 |
'goldenrod4'=>array(139,105,20),
|
|
|
323 |
'darkgoldenrod1'=>array(255,185,15),
|
|
|
324 |
'darkgoldenrod2'=>array(238,173,14),
|
|
|
325 |
'darkgoldenrod3'=>array(205,149,12),
|
|
|
326 |
'darkgoldenrod4'=>array(139,101,8),
|
|
|
327 |
'rosybrown1'=>array(255,193,193),
|
|
|
328 |
'rosybrown2'=>array(238,180,180),
|
|
|
329 |
'rosybrown3'=>array(205,155,155),
|
|
|
330 |
'rosybrown4'=>array(139,105,105),
|
|
|
331 |
'indianred1'=>array(255,106,106),
|
|
|
332 |
'indianred2'=>array(238,99,99),
|
|
|
333 |
'indianred3'=>array(205,85,85),
|
|
|
334 |
'indianred4'=>array(139,58,58),
|
|
|
335 |
'sienna1'=>array(255,130,71),
|
|
|
336 |
'sienna2'=>array(238,121,66),
|
|
|
337 |
'sienna3'=>array(205,104,57),
|
|
|
338 |
'sienna4'=>array(139,71,38),
|
|
|
339 |
'burlywood1'=>array(255,211,155),
|
|
|
340 |
'burlywood2'=>array(238,197,145),
|
|
|
341 |
'burlywood3'=>array(205,170,125),
|
|
|
342 |
'burlywood4'=>array(139,115,85),
|
|
|
343 |
'wheat1'=>array(255,231,186),
|
|
|
344 |
'wheat2'=>array(238,216,174),
|
|
|
345 |
'wheat3'=>array(205,186,150),
|
|
|
346 |
'wheat4'=>array(139,126,102),
|
|
|
347 |
'tan1'=>array(255,165,79),
|
|
|
348 |
'tan2'=>array(238,154,73),
|
|
|
349 |
'tan3'=>array(205,133,63),
|
|
|
350 |
'tan4'=>array(139,90,43),
|
|
|
351 |
'chocolate1'=>array(255,127,36),
|
|
|
352 |
'chocolate2'=>array(238,118,33),
|
|
|
353 |
'chocolate3'=>array(205,102,29),
|
|
|
354 |
'chocolate4'=>array(139,69,19),
|
|
|
355 |
'firebrick1'=>array(255,48,48),
|
|
|
356 |
'firebrick2'=>array(238,44,44),
|
|
|
357 |
'firebrick3'=>array(205,38,38),
|
|
|
358 |
'firebrick4'=>array(139,26,26),
|
|
|
359 |
'brown1'=>array(255,64,64),
|
|
|
360 |
'brown2'=>array(238,59,59),
|
|
|
361 |
'brown3'=>array(205,51,51),
|
|
|
362 |
'brown4'=>array(139,35,35),
|
|
|
363 |
'salmon1'=>array(255,140,105),
|
|
|
364 |
'salmon2'=>array(238,130,98),
|
|
|
365 |
'salmon3'=>array(205,112,84),
|
|
|
366 |
'salmon4'=>array(139,76,57),
|
|
|
367 |
'lightsalmon1'=>array(255,160,122),
|
|
|
368 |
'lightsalmon2'=>array(238,149,114),
|
|
|
369 |
'lightsalmon3'=>array(205,129,98),
|
|
|
370 |
'lightsalmon4'=>array(139,87,66),
|
|
|
371 |
'orange1'=>array(255,165,0),
|
|
|
372 |
'orange2'=>array(238,154,0),
|
|
|
373 |
'orange3'=>array(205,133,0),
|
|
|
374 |
'orange4'=>array(139,90,0),
|
|
|
375 |
'darkorange1'=>array(255,127,0),
|
|
|
376 |
'darkorange2'=>array(238,118,0),
|
|
|
377 |
'darkorange3'=>array(205,102,0),
|
|
|
378 |
'darkorange4'=>array(139,69,0),
|
|
|
379 |
'coral1'=>array(255,114,86),
|
|
|
380 |
'coral2'=>array(238,106,80),
|
|
|
381 |
'coral3'=>array(205,91,69),
|
|
|
382 |
'coral4'=>array(139,62,47),
|
|
|
383 |
'tomato1'=>array(255,99,71),
|
|
|
384 |
'tomato2'=>array(238,92,66),
|
|
|
385 |
'tomato3'=>array(205,79,57),
|
|
|
386 |
'tomato4'=>array(139,54,38),
|
|
|
387 |
'orangered1'=>array(255,69,0),
|
|
|
388 |
'orangered2'=>array(238,64,0),
|
|
|
389 |
'orangered3'=>array(205,55,0),
|
|
|
390 |
'orangered4'=>array(139,37,0),
|
|
|
391 |
'deeppink1'=>array(255,20,147),
|
|
|
392 |
'deeppink2'=>array(238,18,137),
|
|
|
393 |
'deeppink3'=>array(205,16,118),
|
|
|
394 |
'deeppink4'=>array(139,10,80),
|
|
|
395 |
'hotpink1'=>array(255,110,180),
|
|
|
396 |
'hotpink2'=>array(238,106,167),
|
|
|
397 |
'hotpink3'=>array(205,96,144),
|
|
|
398 |
'hotpink4'=>array(139,58,98),
|
|
|
399 |
'pink1'=>array(255,181,197),
|
|
|
400 |
'pink2'=>array(238,169,184),
|
|
|
401 |
'pink3'=>array(205,145,158),
|
|
|
402 |
'pink4'=>array(139,99,108),
|
|
|
403 |
'lightpink1'=>array(255,174,185),
|
|
|
404 |
'lightpink2'=>array(238,162,173),
|
|
|
405 |
'lightpink3'=>array(205,140,149),
|
|
|
406 |
'lightpink4'=>array(139,95,101),
|
|
|
407 |
'palevioletred1'=>array(255,130,171),
|
|
|
408 |
'palevioletred2'=>array(238,121,159),
|
|
|
409 |
'palevioletred3'=>array(205,104,137),
|
|
|
410 |
'palevioletred4'=>array(139,71,93),
|
|
|
411 |
'maroon1'=>array(255,52,179),
|
|
|
412 |
'maroon2'=>array(238,48,167),
|
|
|
413 |
'maroon3'=>array(205,41,144),
|
|
|
414 |
'maroon4'=>array(139,28,98),
|
|
|
415 |
'violetred1'=>array(255,62,150),
|
|
|
416 |
'violetred2'=>array(238,58,140),
|
|
|
417 |
'violetred3'=>array(205,50,120),
|
|
|
418 |
'violetred4'=>array(139,34,82),
|
|
|
419 |
'magenta1'=>array(255,0,255),
|
|
|
420 |
'magenta2'=>array(238,0,238),
|
|
|
421 |
'magenta3'=>array(205,0,205),
|
|
|
422 |
'magenta4'=>array(139,0,139),
|
|
|
423 |
'mediumred'=>array(140,34,34),
|
|
|
424 |
'orchid1'=>array(255,131,250),
|
|
|
425 |
'orchid2'=>array(238,122,233),
|
|
|
426 |
'orchid3'=>array(205,105,201),
|
|
|
427 |
'orchid4'=>array(139,71,137),
|
|
|
428 |
'plum1'=>array(255,187,255),
|
|
|
429 |
'plum2'=>array(238,174,238),
|
|
|
430 |
'plum3'=>array(205,150,205),
|
|
|
431 |
'plum4'=>array(139,102,139),
|
|
|
432 |
'mediumorchid1'=>array(224,102,255),
|
|
|
433 |
'mediumorchid2'=>array(209,95,238),
|
|
|
434 |
'mediumorchid3'=>array(180,82,205),
|
|
|
435 |
'mediumorchid4'=>array(122,55,139),
|
|
|
436 |
'darkorchid1'=>array(191,62,255),
|
|
|
437 |
'darkorchid2'=>array(178,58,238),
|
|
|
438 |
'darkorchid3'=>array(154,50,205),
|
|
|
439 |
'darkorchid4'=>array(104,34,139),
|
|
|
440 |
'purple1'=>array(155,48,255),
|
|
|
441 |
'purple2'=>array(145,44,238),
|
|
|
442 |
'purple3'=>array(125,38,205),
|
|
|
443 |
'purple4'=>array(85,26,139),
|
|
|
444 |
'mediumpurple1'=>array(171,130,255),
|
|
|
445 |
'mediumpurple2'=>array(159,121,238),
|
|
|
446 |
'mediumpurple3'=>array(137,104,205),
|
|
|
447 |
'mediumpurple4'=>array(93,71,139),
|
|
|
448 |
'thistle1'=>array(255,225,255),
|
|
|
449 |
'thistle2'=>array(238,210,238),
|
|
|
450 |
'thistle3'=>array(205,181,205),
|
|
|
451 |
'thistle4'=>array(139,123,139),
|
|
|
452 |
'gray1'=>array(10,10,10),
|
|
|
453 |
'gray2'=>array(40,40,30),
|
|
|
454 |
'gray3'=>array(70,70,70),
|
|
|
455 |
'gray4'=>array(100,100,100),
|
|
|
456 |
'gray5'=>array(130,130,130),
|
|
|
457 |
'gray6'=>array(160,160,160),
|
|
|
458 |
'gray7'=>array(190,190,190),
|
|
|
459 |
'gray8'=>array(210,210,210),
|
|
|
460 |
'gray9'=>array(240,240,240),
|
|
|
461 |
'darkgray'=>array(100,100,100),
|
|
|
462 |
'darkblue'=>array(0,0,139),
|
|
|
463 |
'darkcyan'=>array(0,139,139),
|
|
|
464 |
'darkmagenta'=>array(139,0,139),
|
|
|
465 |
'darkred'=>array(139,0,0),
|
|
|
466 |
'silver'=>array(192, 192, 192),
|
|
|
467 |
'eggplant'=>array(144,176,168),
|
|
|
468 |
'lightgreen'=>array(144,238,144));
|
|
|
469 |
}
|
|
|
470 |
|
|
|
471 |
|
|
|
472 |
//----------------
|
|
|
473 |
// PUBLIC METHODS
|
|
|
474 |
// Colors can be specified as either
|
|
|
475 |
// 1. #xxxxxx HTML style
|
|
|
476 |
// 2. "colorname" as a named color
|
|
|
477 |
// 3. array(r,g,b) RGB triple
|
|
|
478 |
// This function translates this to a native RGB format and returns an
|
|
|
479 |
// RGB triple.
|
|
|
480 |
|
|
|
481 |
function Color($aColor) {
|
|
|
482 |
if (is_string($aColor)) {
|
|
|
483 |
$matches = array();
|
|
|
484 |
// this regex will parse a color string and fill the $matches array as such:
|
|
|
485 |
// 0: the full match if any
|
|
|
486 |
// 1: a hex string preceded by a hash, can be 3 characters (#fff) or 6 (#ffffff) (4 or 5 also accepted but...)
|
|
|
487 |
// 2,3,4: r,g,b values in hex if the first character of the string is #
|
|
|
488 |
// 5: all alpha-numeric characters at the beginning of the string if string does not start with #
|
|
|
489 |
// 6: alpha value prefixed by @ if supplied
|
|
|
490 |
// 7: alpha value with @ stripped
|
|
|
491 |
// 8: adjust value prefixed with : if supplied
|
|
|
492 |
// 9: adjust value with : stripped
|
|
|
493 |
$regex = '/(#([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2}))?([\w]+)?(@([\d\.,]+))?(:([\d\.,]+))?/';
|
|
|
494 |
if(!preg_match($regex, $aColor, $matches)) {
|
|
|
495 |
JpGraphError::RaiseL(25078,$aColor);//(" Unknown color: $aColor");
|
|
|
496 |
}
|
|
|
497 |
if(empty($matches[5])) {
|
|
|
498 |
$r = strlen($matches[2]) == 1 ? $matches[2].$matches[2] : $matches[2];
|
|
|
499 |
$g = strlen($matches[3]) == 1 ? $matches[3].$matches[3] : $matches[3];
|
|
|
500 |
$b = strlen($matches[4]) == 1 ? $matches[4].$matches[4] : $matches[4];
|
|
|
501 |
$r = hexdec($r);
|
|
|
502 |
$g = hexdec($g);
|
|
|
503 |
$b = hexdec($b);
|
|
|
504 |
}else {
|
|
|
505 |
if(!isset($this->rgb_table[$matches[5]]) ) {
|
|
|
506 |
JpGraphError::RaiseL(25078,$aColor);//(" Unknown color: $aColor");
|
|
|
507 |
}
|
|
|
508 |
$r = $this->rgb_table[$matches[5]][0];
|
|
|
509 |
$g = $this->rgb_table[$matches[5]][1];
|
|
|
510 |
$b = $this->rgb_table[$matches[5]][2];
|
|
|
511 |
}
|
|
|
512 |
$alpha = isset($matches[7]) ? str_replace(',','.',$matches[7]) : 0;
|
|
|
513 |
$adj = isset($matches[9]) ? str_replace(',','.',$matches[9]) : 1.0;
|
|
|
514 |
|
|
|
515 |
if( $adj < 0 ) {
|
|
|
516 |
JpGraphError::RaiseL(25077);//('Adjustment factor for color must be > 0');
|
|
|
517 |
}
|
|
|
518 |
|
|
|
519 |
// Scale adj so that an adj=2 always
|
|
|
520 |
// makes the color 100% white (i.e. 255,255,255.
|
|
|
521 |
// and adj=1 neutral and adj=0 black.
|
|
|
522 |
if( $adj == 1) {
|
|
|
523 |
return array($r,$g,$b,$alpha);
|
|
|
524 |
}
|
|
|
525 |
elseif( $adj > 1 ) {
|
|
|
526 |
$m = ($adj-1.0)*(255-min(255,min($r,min($g,$b))));
|
|
|
527 |
return array(min(255,$r+$m), min(255,$g+$m), min(255,$b+$m),$alpha);
|
|
|
528 |
}
|
|
|
529 |
elseif( $adj < 1 ) {
|
|
|
530 |
$m = ($adj-1.0)*max(255,max($r,max($g,$b)));
|
|
|
531 |
return array(max(0,$r+$m), max(0,$g+$m), max(0,$b+$m),$alpha);
|
|
|
532 |
}
|
|
|
533 |
} elseif( is_array($aColor) ) {
|
|
|
534 |
if(!isset($aColor[3])) $aColor[3] = 0;
|
|
|
535 |
return $aColor;
|
|
|
536 |
}
|
|
|
537 |
else {
|
|
|
538 |
JpGraphError::RaiseL(25079,$aColor,count($aColor));//(" Unknown color specification: $aColor , size=".count($aColor));
|
|
|
539 |
}
|
|
|
540 |
}
|
|
|
541 |
|
|
|
542 |
// Compare two colors
|
|
|
543 |
// return true if equal
|
|
|
544 |
function Equal($aCol1,$aCol2) {
|
|
|
545 |
$c1 = $this->Color($aCol1);
|
|
|
546 |
$c2 = $this->Color($aCol2);
|
|
|
547 |
return $c1[0]==$c2[0] && $c1[1]==$c2[1] && $c1[2]==$c2[2] ;
|
|
|
548 |
}
|
|
|
549 |
|
|
|
550 |
// Allocate a new color in the current image
|
|
|
551 |
// Return new color index, -1 if no more colors could be allocated
|
|
|
552 |
function Allocate($aColor,$aAlpha=0.0) {
|
|
|
553 |
list ($r, $g, $b, $a) = $this->color($aColor);
|
|
|
554 |
// If alpha is specified in the color string then this
|
|
|
555 |
// takes precedence over the second argument
|
|
|
556 |
if( $a > 0 ) {
|
|
|
557 |
$aAlpha = $a;
|
|
|
558 |
}
|
|
|
559 |
if( $aAlpha < 0 || $aAlpha > 1 ) {
|
|
|
560 |
JpGraphError::RaiseL(25080);//('Alpha parameter for color must be between 0.0 and 1.0');
|
|
|
561 |
}
|
|
|
562 |
return imagecolorresolvealpha($this->img, $r, $g, $b, round($aAlpha * 127));
|
|
|
563 |
}
|
|
|
564 |
|
|
|
565 |
// Try to convert an array with three valid numbers to the corresponding hex array
|
|
|
566 |
// This is currenly only used in processing the colors for barplots in order to be able
|
|
|
567 |
// to handle the case where the color might be specified as an array of colros as well.
|
|
|
568 |
// In that case we must be able to find out if an array of values should be interpretated as
|
|
|
569 |
// a single color (specifeid as an RGB triple)
|
|
|
570 |
static function tryHexConversion($aColor) {
|
|
|
571 |
if( is_array( $aColor ) ) {
|
|
|
572 |
if( count( $aColor ) == 3 ) {
|
|
|
573 |
if( is_numeric($aColor[0]) && is_numeric($aColor[1]) && is_numeric($aColor[2]) ) {
|
|
|
574 |
if( ($aColor[0] >= 0 && $aColor[0] <= 255) &&
|
|
|
575 |
($aColor[1] >= 0 && $aColor[1] <= 255) &&
|
|
|
576 |
($aColor[2] >= 0 && $aColor[2] <= 255) ) {
|
|
|
577 |
return sprintf('#%02x%02x%02x',$aColor[0],$aColor[1],$aColor[2]);
|
|
|
578 |
}
|
|
|
579 |
}
|
|
|
580 |
}
|
|
|
581 |
}
|
|
|
582 |
return $aColor;
|
|
|
583 |
}
|
|
|
584 |
|
|
|
585 |
// Return a RGB tripple corresponding to a position in the normal light spectrum
|
|
|
586 |
// The argumen values is in the range [0, 1] where a value of 0 correponds to blue and
|
|
|
587 |
// a value of 1 corresponds to red. Values in betwen is mapped to a linear interpolation
|
|
|
588 |
// of the constituting colors in the visible color spectra.
|
|
|
589 |
// The $aDynamicRange specified how much of the dynamic range we shold use
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|
|
590 |
// a value of 1.0 give the full dyanmic range and a lower value give more dark
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|
|
591 |
// colors. In the extreme of 0.0 then all colors will be black.
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|
|
592 |
static function GetSpectrum($aVal,$aDynamicRange=1.0) {
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|
|
593 |
if( $aVal < 0 || $aVal > 1.0001 ) {
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|
594 |
return array(0,0,0); // Invalid case - just return black
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|
595 |
}
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|
596 |
|
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|
597 |
$sat = round(255*$aDynamicRange);
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|
|
598 |
$a = 0.25;
|
|
|
599 |
if( $aVal <= 0.25 ) {
|
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|
600 |
return array(0, round($sat*$aVal/$a), $sat);
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|
|
601 |
}
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|
|
602 |
elseif( $aVal <= 0.5 ) {
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|
|
603 |
return array(0, $sat, round($sat-$sat*($aVal-0.25)/$a));
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|
|
604 |
}
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|
|
605 |
elseif( $aVal <= 0.75 ) {
|
|
|
606 |
return array(round($sat*($aVal-0.5)/$a), $sat, 0);
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|
|
607 |
}
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|
|
608 |
else {
|
|
|
609 |
return array($sat, round($sat-$sat*($aVal-0.75)/$a), 0);
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|
|
610 |
}
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|
|
611 |
}
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|
|
612 |
|
|
|
613 |
} // Class
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|
|
614 |
|
|
|
615 |
?>
|